OPJ_UINT32 p_header_size,
opj_event_mgr_t * p_manager );
-/**
-Read the PPM marker (packet packet headers, main header)
-@param j2k J2K handle
-*/
-static void j2k_read_ppm(opj_j2k_t *j2k);
+
/**
* Reads a PPM marker (Packed packet headers, main header)
*
return OPJ_TRUE;
}
-static void j2k_read_ppm(opj_j2k_t *j2k) {
- int len, Z_ppm, i, j;
- int N_ppm;
-
- opj_cp_t *cp = j2k->cp;
- opj_cio_t *cio = j2k->cio;
-
- len = cio_read(cio, 2);
- cp->ppm = 1;
-
- Z_ppm = cio_read(cio, 1); /* Z_ppm */
- len -= 3;
- while (len > 0) {
- if (cp->ppm_previous == 0) {
- N_ppm = cio_read(cio, 4); /* N_ppm */
- len -= 4;
- } else {
- N_ppm = cp->ppm_previous;
- }
- j = cp->ppm_store;
- if (Z_ppm == 0) { /* First PPM marker */
- cp->ppm_data = (unsigned char *) opj_malloc(N_ppm * sizeof(unsigned char));
- cp->ppm_data_first = cp->ppm_data;
- cp->ppm_len = N_ppm;
- } else { /* NON-first PPM marker */
- cp->ppm_data = (unsigned char *) opj_realloc(cp->ppm_data, (N_ppm + cp->ppm_store) * sizeof(unsigned char));
-
-#ifdef USE_JPWL
- /* this memory allocation check could be done even in non-JPWL cases */
- if (cp->correct) {
- if (!cp->ppm_data) {
- opj_event_msg(j2k->cinfo, EVT_ERROR,
- "JPWL: failed memory allocation during PPM marker parsing (pos. %x)\n",
- cio_tell(cio));
- if (!JPWL_ASSUME || JPWL_ASSUME) {
- opj_free(cp->ppm_data);
- opj_event_msg(j2k->cinfo, EVT_ERROR, "JPWL: giving up\n");
- return;
- }
- }
- }
-#endif
- cp->ppm_data_first = cp->ppm_data;
- cp->ppm_len = N_ppm + cp->ppm_store;
- }
- for (i = N_ppm; i > 0; i--) { /* Read packet header */
- cp->ppm_data[j] = cio_read(cio, 1);
- j++;
- len--;
- if (len == 0)
- break; /* Case of non-finished packet header in present marker but finished in next one */
- }
- cp->ppm_previous = i - 1;
- cp->ppm_store = j;
- }
-}
/**
* Reads a PPM marker (Packed packet headers, main header)
*
/*{J2K_MS_TLM, J2K_STATE_MH, j2k_read_tlm},*/
/*{J2K_MS_PLM, J2K_STATE_MH, j2k_read_plm},*/
/*{J2K_MS_PLT, J2K_STATE_TPH, j2k_read_plt},*/
- {J2K_MS_PPM, J2K_STATE_MH, j2k_read_ppm},
+ /*{J2K_MS_PPM, J2K_STATE_MH, j2k_read_ppm},*/
{J2K_MS_PPT, J2K_STATE_TPH, j2k_read_ppt},
{J2K_MS_SOP, 0, 0},
{J2K_MS_CRG, J2K_STATE_MH, j2k_read_crg},